CVE-2026-98871

A flaw was found in the Linux kernel's AMD Cryptographic Coprocessor (CCP) driver. This vulnerability can lead to a Denial of Service (DoS) due to a deadlock during AMD Secure Encrypted Virtualization (SEV) platform initialization. When an error occurs while configuring firmware memory, improper lock handling in the cleanup path causes the kernel to wait indefinitely on an already acquired lock. A local privileged user capable of triggering this initialization failure can exploit this flaw to hang the system.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.